Grandpa Posted April 21, 2017 Share Posted April 21, 2017 I have twelve new in the box 18mm Auto-Lite spark plugs, part number B-7. I would appreciate it if someone would let me know the application for these spark plugs for vintage cars prior to 1965. Thank you. Link to comment Share on other sites More sharing options...
Fleek Posted April 21, 2017 Share Posted April 21, 2017 Don't know if this helps or not. Found a couple of references for Autolite B7A-12405 fitting Ford 312 engines from 57 to 61. Seems to crossreference to BTF6 Link to comment Share on other sites More sharing options...
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